/Engine/Source/Runtime/GeometryCore/Public/Image/ImageBuilder.h
Sample the image value at floating-point pixel coords with Bilinear interpolation The pixel coords are expected to be in the [0,Width]x[0,Height] image pixel rectangle.
template<typename ScalarType, [EImageTilingMethod](API\Runtime\GeometryCore\Image\UE__Geometry__EImageTilingMethod) TilingMethod> PixelType BilinearSample ( const FVector2d & PixelCoords, const PixelType & InvalidValue ) const